[configrue] output "none" for NCP Vendor Hook or Spinel Encrypted when not specified (#2497)
[configrue] output "none" for NCP Vendor Hook or Spinel Encrypted when not specified (#2497)


openthread/openthread,mszczodrak/openthread,erja-gp/openthread,mszczodrak/openthread,librasungirl/openthread,lanyuwen/openthread,chshu/openthread,gandreello/openthread,turon/openthread,openthread/openthread,srickardti/openthread,librasungirl/openthread,lanyuwen/openthread,gandreello/openthread,jwhui/openthread,LeZhang2016/openthread,chshu/openthread,jwhui/openthread,erja-gp/openthread,erja-gp/openthread,librasungirl/openthread,georgecpr/openthread,georgecpr/openthread,turon/openthread,pvanhorn/openthread,LeZhang2016/openthread,mszczodrak/openthread,LeZhang2016/openthread,mszczodrak/openthread,LeZhang2016/openthread,gandreello/openthread,turon/openthread,openthread/openthread,bukepo/openthread,jwhui/openthread,openthread/openthread,bukepo/openthread,pvanhorn/openthread,srickardti/openthread,georgecpr/openthread,lanyuwen/openthread,abtink/openthread,gandreello/openthread,georgecpr/openthread,LeZhang2016/openthread,abtink/openthread,srickardti/openthread,erja-gp/openthread,abtink/openthread,srickardti/openthread,bukepo/openthread,georgecpr/openthread,mszczodrak/openthread,gandreello/openthread,mszczodrak/openthread,pvanhorn/openthread,librasungirl/openthread,gandreello/openthread,chshu/openthread,erja-gp/openthread,lanyuwen/openthread,lanyuwen/openthread,pvanhorn/openthread,lanyuwen/openthread,LeZhang2016/openthread,erja-gp/openthread,bukepo/openthread,jwhui/openthread,turon/openthread,chshu/openthread,chshu/openthread,abtink/openthread,georgecpr/openthread,pvanhorn/openthread,pvanhorn/openthread,chshu/openthread